Add option to hide missing chapter count (#2108)

Co-authored-by: AntsyLich <59261191+AntsyLich@users.noreply.github.com>

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsLibraryScreen.kt

@@ -256,6 +256,10 @@ object SettingsLibraryScreen : SearchableSettings {
                     ),
                     title = stringResource(MR.strings.pref_mark_duplicate_read_chapter_read),
                 ),
+                Preference.PreferenceItem.SwitchPreference(
+                    preference = libraryPreferences.hideMissingChapters(),
+                    title = stringResource(MR.strings.pref_hide_missing_chapter_indicators),
+                ),
             ),
         )
     }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaScreenModel.kt

@@ -230,6 +230,7 @@ class MangaScreenModel(
                     excludedScanlators = getExcludedScanlators.await(mangaId),
                     isRefreshingData = needRefreshInfo || needRefreshChapter,
                     dialog = null,
+                    hideMissingChapters = libraryPreferences.hideMissingChapters().get(),
                 )
             }
 
@@ -1126,6 +1127,7 @@ class MangaScreenModel(
             val isRefreshingData: Boolean = false,
             val dialog: Dialog? = null,
             val hasPromptedToAddBefore: Boolean = false,
+            val hideMissingChapters: Boolean = false,
         ) : State {
             val processedChapters by lazy {
                 chapters.applyFilters(manga).toList()
@@ -1136,6 +1138,10 @@ class MangaScreenModel(
             }
 
             val chapterListItems by lazy {
+                if (hideMissingChapters) {
+                    return@lazy processedChapters
+                }
+
                 processedChapters.insertSeparators { before, after ->
                     val (lowerChapter, higherChapter) = if (manga.sortDescending()) {
                         after to before